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a. ·­¿ª/etc/securettyÎļþ £¬²éÕÒ²¢×¢Ê͵ôÒÔÏÂÐУº

# pts/0
# pts/1
# pts/2

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b. ·­¿ª/etc/xinetd.d/telnetÎļþ £¬½«ÒÔÏÂÐеÄdisable¸ÄΪyes£º

...
disable = yes
...

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c. ʹÓÃÒÔÏÂÏÂÁîÖØÆôxinetdЧÀÍ£º

systemctl restart xinetd

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FTPЭÒéÊÇÒ»ÖÖÃ÷ÎÄ´«ÊäµÄÎļþ´«ÊäЭÒé £¬Ò²±£´æÇ徲Σº¦¡£ÎÒÃÇ¿ÉÒÔͨ¹ýÐÞ¸ÄvsftpdµÄÉèÖÃÎļþÀ´½ûÓÃFTPЧÀÍ¡£Ïêϸ°ì·¨ÈçÏ£º

a. ʹÓÃÒÔÏÂÏÂÁî±à¼­/etc/vsftpd/vsftpd.confÎļþ£º

vi /etc/vsftpd/vsftpd.conf

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b. ½«ÒÔÏÂÐеÄÖµ¸ÄΪNO£º

anonymous_enable=NO

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c. ʹÓÃÒÔÏÂÏÂÁîÖØÆôvsftpdЧÀÍ£º

systemctl restart vsftpd

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½ûÓÃTelnetЧÀÍ

³ýÁ˽ûÓÃTelnetЭÒéÍâ £¬ÎÒÃÇ»¹¿ÉÒÔͨ¹ýÐÞ¸ÄCentOSϵͳµÄЧÀÍÉèÖÃÎļþÀ´½ûÓÃTelnetЧÀÍ¡£Ïêϸ°ì·¨ÈçÏ£º

a. ʹÓÃÒÔÏÂÏÂÁî±à¼­/etc/xinetd.d/telnetÎļþ£º

vi /etc/xinetd.d/telnet

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b. ½«ÒÔÏÂÐеÄdisable¸ÄΪyes£º

disable = yes

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c. ʹÓÃÒÔÏÂÏÂÁîÖØÆôxinetdЧÀÍ£º

systemctl restart xinetd

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½ûÓÃFTPЧÀÍ

³ýÁ˽ûÓÃFTPЭÒéÍâ £¬ÎÒÃÇ»¹¿ÉÒÔͨ¹ýÐÞ¸ÄCentOSϵͳµÄЧÀÍÉèÖÃÎļþÀ´½ûÓÃFTPЧÀÍ¡£Ïêϸ°ì·¨ÈçÏ£º

a. ʹÓÃÒÔÏÂÏÂÁî±à¼­/etc/servicesÎļþ£º

vi /etc/services

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b. ×¢Ê͵ôÒÔÏÂÐУº

ftp             21/tcp          # File Transfer Protocol

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c. ʹÓÃÒÔÏÂÏÂÁîÖØÆôvsftpdЧÀÍ£º

systemctl restart vsftpd

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CentOS¹Ù·½Îĵµ – https://www.centos.org/

Red Hat Enterprise Linux 7 Security Guide – https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/security_guide/index.html

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